Last name Gielan (Gielan 
) , worldwide, is an extremely rare cognomen. The surname Gielan is habitual in Northern America, particularly the United States, where it is an extremely rare surname. More prevalently, Gielan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gielan | India, United States, Philippines |
| michelle gielan US (b. 1978) |
|